gtk2_ardour/streamview.cc

   1 /*
   2     Copyright (C) 2001, 2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <cmath>
  20
  21 #include <gtkmm.h>
  22
  23 #include <gtkmm2ext/gtk_ui.h>
  24
  25 #include <ardour/playlist.h>
  26 #include <ardour/region.h>
  27 #include <ardour/source.h>
  28 #include <ardour/diskstream.h>
  29 #include <ardour/track.h>
  30
  31 #include "streamview.h"
  32 #include "region_view.h"
  33 #include "route_time_axis.h"
  34 #include "canvas-waveview.h"
  35 #include "canvas-simplerect.h"
  36 #include "region_selection.h"
  37 #include "selection.h"
  38 #include "public_editor.h"
  39 #include "ardour_ui.h"
  40 #include "rgb_macros.h"
  41 #include "gui_thread.h"
  42 #include "utils.h"
  43
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace Editing;
  47
  48 StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* group)
  49         : _trackview (tv)
  50         , owns_canvas_group(group == 0)
  51         , canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display))
  52         , _samples_per_unit(_trackview.editor.get_current_zoom())
  53         , rec_updating(false)
  54         , rec_active(false)
  55         , use_rec_regions(tv.editor.show_waveforms_recording())
  56         , region_color(_trackview.color())
  57         , stream_base_color(0xFFFFFFFF)
  58         , layers(1)
  59         , height(tv.height)
  60         , layer_display(Overlaid)
  61         , last_rec_data_frame(0)
  62 {
  63         /* set_position() will position the group */
  64
  65         canvas_rect = new ArdourCanvas::SimpleRect (*canvas_group);
  66         canvas_rect->property_x1() = 0.0;
  67         canvas_rect->property_y1() = 0.0;
  68         canvas_rect->property_x2() = _trackview.editor.frame_to_pixel (max_frames - 1);
  69         canvas_rect->property_y2() = (double) tv.current_height();
  70
  71         // DR-way
  72         canvas_rect->property_outline_what() = (guint32) (0x2|0x8);  // outline RHS and bottom
  73         // 2.0 way
  74         //canvas_rect->property_outline_what() = (guint32) (0x1|0x2|0x8);  // outline ends and bottom
  75         // (Fill/Outline colours set in derived classes)
  76
  77         canvas_rect->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), canvas_rect, &_trackview));
  78
  79         if (_trackview.is_track()) {
  80                 _trackview.track()->DiskstreamChanged.connect (mem_fun (*this, &StreamView::diskstream_changed));
  81                 _trackview.session().TransportStateChange.connect (mem_fun (*this, &StreamView::transport_changed));
  82                 _trackview.session().TransportLooped.connect (mem_fun (*this, &StreamView::transport_looped));
  83                 _trackview.get_diskstream()->RecordEnableChanged.connect (mem_fun (*this, &StreamView::rec_enable_changed));
  84                 _trackview.session().RecordStateChanged.connect (mem_fun (*this, &StreamView::sess_rec_enable_changed));
  85         }
  86
  87         ColorsChanged.connect (mem_fun (*this, &StreamView::color_handler));
  88 }
  89
  90 StreamView::~StreamView ()
  91 {
  92         undisplay_diskstream ();
  93
  94         delete canvas_rect;
  95
  96         if (owns_canvas_group) {
  97                 delete canvas_group;
  98         }
  99 }
 100
 101 void
 102 StreamView::attach ()
 103 {
 104         if (_trackview.is_track()) {
 105                 display_diskstream (_trackview.get_diskstream());
 106         }
 107 }
 108
 109 int
 110 StreamView::set_position (gdouble x, gdouble y)
 111 {
 112         canvas_group->property_x() = x;
 113         canvas_group->property_y() = y;
 114         return 0;
 115 }
 116
 117 int
 118 StreamView::set_height (double h)
 119 {
 120         /* limit the values to something sane-ish */
 121         if (h < 10.0 || h > 1000.0) {
 122                 return -1;
 123         }
 124
 125         if (canvas_rect->property_y2() == h) {
 126                 return 0;
 127         }
 128
 129         height = h;
 130         update_contents_y_position_and_height ();
 131         return 0;
 132 }
 133
 134 int
 135 StreamView::set_samples_per_unit (gdouble spp)
 136 {
 137         RegionViewList::iterator i;
 138
 139         if (spp < 1.0) {
 140                 return -1;
 141         }
 142
 143         _samples_per_unit = spp;
 144
 145         for (i = region_views.begin(); i != region_views.end(); ++i) {
 146                 (*i)->set_samples_per_unit (spp);
 147         }
 148
 149         for (vector<RecBoxInfo>::iterator xi = rec_rects.begin(); xi != rec_rects.end(); ++xi) {
 150                 RecBoxInfo &recbox = (*xi);
 151
 152                 gdouble xstart = _trackview.editor.frame_to_pixel ( recbox.start );
 153                 gdouble xend = _trackview.editor.frame_to_pixel ( recbox.start + recbox.length );
 154
 155                 recbox.rectangle->property_x1() = xstart;
 156                 recbox.rectangle->property_x2() = xend;
 157         }
 158
 159         return 0;
 160 }
 161
 162 void
 163 StreamView::add_region_view (boost::shared_ptr<Region> r)
 164 {
 165         // ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 166
 167         add_region_view_internal (r, true);
 168 }
 169
 170 void
 171 StreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 172 {
 173         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::remove_region_view), weak_r));
 174
 175         boost::shared_ptr<Region> r (weak_r.lock());
 176
 177         if (!r) {
 178                 return;
 179         }
 180
 181         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 182                 if (((*i)->region()) == r) {
 183                         RegionView* rv = *i;
 184                         region_views.erase (i);
 185                         delete rv;
 186                         break;
 187                 }
 188         }
 189 }
 190
 191 void
 192 StreamView::undisplay_diskstream ()
 193 {
 194         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end() ; ) {
 195                 RegionViewList::iterator next = i;
 196                 ++next;
 197                 delete *i;
 198                 i = next;
 199         }
 200
 201         region_views.clear();
 202 }
 203
 204 void
 205 StreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 206 {
 207         playlist_change_connection.disconnect();
 208         playlist_changed (ds);
 209         playlist_change_connection = ds->PlaylistChanged.connect (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 210 }
 211
 212 void
 213 StreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 214 {
 215         boost::shared_ptr<Diskstream> sp (ds.lock());
 216         if (!sp) {
 217                 return;
 218         }
 219
 220         playlist_modified (sp);
 221 }
 222
 223 void
 224 StreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 225 {
 226         /* we do not allow shared_ptr<T> to be bound to slots */
 227         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds));
 228
 229         /* update layers count and the y positions and heights of our regions */
 230         if (ds->playlist()) {
 231                 layers = ds->playlist()->top_layer() + 1;
 232                 update_contents_y_position_and_height ();
 233                 redisplay_diskstream ();
 234         }
 235 }
 236
 237 void
 238 StreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 239 {
 240         /* XXX: binding to a shared_ptr, is this ok? */
 241         ENSURE_GUI_THREAD (bind (mem_fun (*this, &StreamView::playlist_changed), ds));
 242
 243         /* disconnect from old playlist */
 244
 245         for (vector<sigc::connection>::iterator i = playlist_connections.begin(); i != playlist_connections.end(); ++i) {
 246                 (*i).disconnect();
 247         }
 248
 249         playlist_connections.clear();
 250         undisplay_diskstream ();
 251
 252         /* update layers count and the y positions and heights of our regions */
 253         layers = ds->playlist()->top_layer() + 1;
 254         update_contents_y_position_and_height ();
 255
 256         /* draw it */
 257         redisplay_diskstream ();
 258
 259         /* catch changes */
 260
 261         playlist_connections.push_back (ds->playlist()->Modified.connect (bind (mem_fun (*this, &StreamView::playlist_modified_weak), ds)));
 262 }
 263
 264 void
 265 StreamView::diskstream_changed ()
 266 {
 267         boost::shared_ptr<Track> t;
 268
 269         if ((t = _trackview.track()) != 0) {
 270                 Gtkmm2ext::UI::instance()->call_slot (bind (mem_fun (*this, &StreamView::display_diskstream), t->diskstream()));
 271         } else {
 272                 Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::undisplay_diskstream));
 273         }
 274 }
 275
 276 void
 277 StreamView::apply_color (Gdk::Color& color, ColorTarget target)
 278
 279 {
 280         list<RegionView *>::iterator i;
 281
 282         switch (target) {
 283         case RegionColor:
 284                 region_color = color;
 285                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 286                         (*i)->set_color (region_color);
 287                 }
 288                 break;
 289
 290         case StreamBaseColor:
 291                 stream_base_color = RGBA_TO_UINT (
 292                         color.get_red_p(), color.get_green_p(), color.get_blue_p(), 255);
 293                 canvas_rect->property_fill_color_rgba() = stream_base_color;
 294                 break;
 295         }
 296 }
 297
 298 void
 299 StreamView::region_layered (RegionView* rv)
 300 {
 301         /* don't ever leave it at the bottom, since then it doesn't
 302            get events - the  parent group does instead ...
 303            we need to raise it above the streamview's
 304            canvas_rect, hence the layer+1 here
 305         */
 306         rv->get_canvas_group()->raise (rv->region()->layer() + 1);
 307 }
 308
 309 void
 310 StreamView::rec_enable_changed ()
 311 {
 312         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 313 }
 314
 315 void
 316 StreamView::sess_rec_enable_changed ()
 317 {
 318         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 319 }
 320
 321 void
 322 StreamView::transport_changed()
 323 {
 324         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 325 }
 326
 327 void
 328 StreamView::transport_looped()
 329 {
 330         // to force a new rec region
 331         rec_active = false;
 332         Gtkmm2ext::UI::instance()->call_slot (mem_fun (*this, &StreamView::setup_rec_box));
 333 }
 334
 335 void
 336 StreamView::update_rec_box ()
 337 {
 338         if (rec_active && rec_rects.size() > 0) {
 339                 /* only update the last box */
 340                 RecBoxInfo & rect = rec_rects.back();
 341                 nframes_t at = _trackview.get_diskstream()->current_capture_end();
 342                 double xstart;
 343                 double xend;
 344
 345                 switch (_trackview.track()->mode()) {
 346                 case Normal:
 347                         rect.length = at - rect.start;
 348                         xstart = _trackview.editor.frame_to_pixel (rect.start);
 349                         xend = _trackview.editor.frame_to_pixel (at);
 350                         break;
 351
 352                 case Destructive:
 353                         rect.length = 2;
 354                         xstart = _trackview.editor.frame_to_pixel (_trackview.get_diskstream()->current_capture_start());
 355                         xend = _trackview.editor.frame_to_pixel (at);
 356                         break;
 357                 }
 358
 359                 rect.rectangle->property_x1() = xstart;
 360                 rect.rectangle->property_x2() = xend;
 361         }
 362 }
 363
 364 RegionView*
 365 StreamView::find_view (boost::shared_ptr<const Region> region)
 366 {
 367         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 368
 369                 if ((*i)->region() == region) {
 370                         return *i;
 371                 }
 372         }
 373         return 0;
 374 }
 375
 376 void
 377 StreamView::foreach_regionview (sigc::slot<void,RegionView*> slot)
 378 {
 379         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 380                 slot (*i);
 381         }
 382 }
 383
 384 void
 385 StreamView::set_selected_regionviews (RegionSelection& regions)
 386 {
 387         bool selected;
 388
 389         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 390
 391                 selected = false;
 392
 393                 for (RegionSelection::iterator ii = regions.begin(); ii != regions.end(); ++ii) {
 394                         if (*i == *ii) {
 395                                 selected = true;
 396                         }
 397                 }
 398
 399                 (*i)->set_selected (selected);
 400         }
 401 }
 402
 403 void
 404 StreamView::get_selectables (nframes_t start, nframes_t end, list<Selectable*>& results)
 405 {
 406         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 407                 if ((*i)->region()->coverage(start, end) != OverlapNone) {
 408                         results.push_back (*i);
 409                 }
 410         }
 411 }
 412
 413 void
 414 StreamView::get_inverted_selectables (Selection& sel, list<Selectable*>& results)
 415 {
 416         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 417                 if (!sel.regions.contains (*i)) {
 418                         results.push_back (*i);
 419                 }
 420         }
 421 }
 422
 423 void
 424 StreamView::update_contents_y_position_and_height ()
 425 {
 426         canvas_rect->property_y2() = height;
 427
 428         const double lh = height / layers;
 429
 430         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 431                 switch (layer_display) {
 432                 case Overlaid:
 433                         (*i)->set_y_position_and_height (0, height);
 434                         break;
 435                 case Stacked:
 436                         double const y = (*i)->region()->layer() * lh;
 437                         (*i)->set_y_position_and_height (y, lh);
 438                         break;
 439                 }
 440         }
 441
 442         for (vector<RecBoxInfo>::iterator i = rec_rects.begin(); i != rec_rects.end(); ++i) {
 443                 i->rectangle->property_y2() = height - 1.0;
 444         }
 445 }
 446
 447 void
 448 StreamView::set_layer_display (LayerDisplay d)
 449 {
 450         layer_display = d;
 451         update_contents_y_position_and_height ();
 452 }